GC-MS Electron Impact(Griffin)

Summary

Gas Chromatography-Mass Spectrometry (GC-MS) is an analytical technique that combines the separation properties of gas-liquid chromatography with the detection feature of mass spectrometry to identify different substances within an unknown sample. The GC separates volatile compounds by driving them through a heated column with an inert gas such as helium.

Our Instrument

Our GC-MS system is a Griffin 450. This system includes two integrated sample introduction method: Split/splitless liquid injector for liquid sampling via direct syringe injection and Universal Sampling Port (USP) for vapor sampling by means of direct air intake through sampling line. The gas sampling port can also be used for analyzing samples collected by the X-sorber, a portable gas-sampling device. The effluent from the GC is ionized by bombardment with electrons from a hot rhenium filament and the resultant fragments are sent into the mass analyzer. The Griffin 450 uses a cylindrical ion trap (CIT) to separate ions according to their mass-to-charge (m/z) ratio.

How to Use